update CLA signature bot workflow (#382)

Author: rgychiu

.github/workflows/clabot.yml

@@ -6,16 +6,10 @@ on:
     types: [opened,closed,synchronize]
 
 jobs:
-  clabot:
-    runs-on: ubuntu-latest
-    steps:
-    - name: "CLA Signature Bot"
-      uses: roblox/[email protected]
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        whitelist: "LPGhatguy,ZoteTheMighty,cliffchapmanrbx,MisterUncloaked,matthargett,ConorGriffin37,yjia2,bliang"
-        use-remote-repo: true
-        remote-repo-name: "roblox/cla-bot-store"
-        remote-repo-pat: ${{ secrets.CLA_REMOTE_REPO_PAT }}
-        url-to-cladocument: "https://roblox.github.io/cla-bot-store/"
+  call-clabot-workflow:
+    uses: Roblox/cla-signature-bot/.github/workflows/clabot-workflow.yml@master
+    with:
+      whitelist: "LPGhatguy,ZoteTheMighty,cliffchapmanrbx,MisterUncloaked,matthargett,ConorGriffin37,yjia2,bliang"
+      use-remote-repo: true
+      remote-repo-name: "roblox/cla-bot-store"
+    secrets: inherit